Malicious PDF — malware analysis report

Static analysis result for SHA-256 e31824019ddec6a4…

MALICIOUS

PDF

615.3 KB Created: 2020-08-09 04:27:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57f9ed8afbf37234d23bc4b20e50f4e4 SHA-1: 111d0c1a45a9733622f843ba5eb86d32cc0acef2 SHA-256: e31824019ddec6a427440c6ae42c5bf21df81e3a865a8c54866ded962040cefa
60 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=walden+henry+david+thoreau+free+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to trick the user into visiting this malicious site. No scripts were extracted from this sample.

Heuristics 2

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=walden+henry+david+thoreau+free+pdf
    • http://files.guono.org/uploads/1/3/1/4/131406149/3988d751.pdf
    • http://files.commtechcorner.com/uploads/1/3/0/8/130813755/kotewuna.pdf
    • http://files.journeywithjennifer.com/uploads/1/3/1/4/131437657/zemixiko.pdf
    • https://cdn.shopify.com/s/files/1/0431/6489/3345/files/87389776021.pdf
    • https://cdn.shopify.com/s/files/1/0430/4571/6129/files/24095885823.pdf
    • https://cdn.shopify.com/s/files/1/0433/4059/5352/files/tugidef.pdf
    • https://cdn.shopify.com/s/files/1/0430/1537/2953/files/xisuvumoladumod.pdf
    • https://cdn.shopify.com/s/files/1/0431/4162/8072/files/zoruxubusu.pdf
    • https://cdn.shopify.com/s/files/1/0440/5464/2853/files/94375747889.pdf
    • https://cdn.shopify.com/s/files/1/0429/1022/0447/files/purebosawutesisodig.pdf
    • https://cdn.shopify.com/s/files/1/0440/4061/8134/files/biogeochemical_cycles_notes.pdf
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/vebipoxarokexofupere.pdf
    • https://cdn.shopify.com/s/files/1/0437/2014/7093/files/80057032875.pdf
    • https://cdn.shopify.com/s/files/1/0433/2729/1547/files/jeganibipavesipek.pdf
    • https://cdn.shopify.com/s/files/1/0431/3251/8554/files/93015494377.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00094a5b.bin
32722d16bec8af4d2ec033e36f8d3f14bdc947d1a631a69e1d2e501c5e29a508		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94A5B 5124 bytes
font_01_sfnt_off00095be8.bin
7716a3e98a5657f4a3a2a67c0a1b913662b25c4775082d2cfb224fb48468fdbf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95BE8 14772 bytes

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